Nissho Engineering Co., Ltd.
9Patents
1Active
9Granted
32Portfolio score
Filing activity: Feb 12, 1987 → Oct 5, 2006 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5487398A | Rotary cleaning method with chemical solutions and rotary cleaning apparatus with chemical solutions | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4980017A | Method for recirculating high-temperature etching solution | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4902206A | Bellows pump | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US4775267A | Pneumatic conveyor for powder | Performing Operations; Transporting | 33 | Expired |
| US5470421A | Method for purification of etching solution | Electricity | 28 | Expired |
| US5472244A | Plastic coupling for plastic tubing | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US8152142B2 | Service water pipe faucet direct-connected ozone water producer with self-power generator | Emerging Cross-Sectional Technologies | 13 | Active |
| US6444589B1 | Method and apparatus for etching silicon | Electricity | 7 | Expired |
| US6098848A | Method and apparatus for connecting a fluid reservoir with pipelines | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.